Charges are pending against a teenage girl in the stabbing death of another Westchester teen on Sunday.Elsa Comacho, 17, of Yorktown Heights was at a housing complex on Lexington Avenue around midnight when police say she and four other girls got into an argument. Investigators say the fight started over the phone on Saturday night and was about a boy. Detectives questioned the girls who were present when Comacho was stabbed. They say Comacho revealed her attacker?s identity before being rushed to Westchester Medical Center where she died. Comacho attended Yorktown High School.